diff --git a/include/linux/mount.h b/include/linux/mount.h
index c2c561dc011440ee83f395aba0a226ab467204a0..bca086d62b1a745f9a4ddfe12670139d9ce228d4 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -92,6 +92,6 @@ extern struct vfsmount *vfs_kern_mount(struct file_system_type *type,
 extern void mnt_set_expiry(struct vfsmount *mnt, struct list_head *expiry_list);
 extern void mark_mounts_for_expiry(struct list_head *mounts);
 
-extern dev_t name_to_dev_t(char *name);
+extern dev_t name_to_dev_t(const char *name);
 
 #endif /* _LINUX_MOUNT_H */
diff --git a/init/do_mounts.c b/init/do_mounts.c
index eb410083e8e075f9ca1829d0db1bf3cb70d17139..c16adfbe4ad65a09eaea6e55bb3cbf370743aa9c 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -207,7 +207,7 @@ static dev_t devt_from_partuuid(const char *uuid_str)
  *	bangs.
  */
 
-dev_t name_to_dev_t(char *name)
+dev_t name_to_dev_t(const char *name)
 {
 	char s[32];
 	char *p;
@@ -286,6 +286,7 @@ dev_t name_to_dev_t(char *name)
 done:
 	return res;
 }
+EXPORT_SYMBOL_GPL(name_to_dev_t);
 
 static int __init root_dev_setup(char *line)
 {